Clean Water Act discharge permit · NPDES MTG490016

MILFORD COLONY - SAND & GRAVEL PERMIT, Wolf Creek, MT: NPDES MTG490016 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
4Pollutants under a numeric limit
1Pollutants with an effluent exceedance

MILFORD COLONY - SAND & GRAVEL PERMIT, held by MILFORD COLONY, holds NPDES permit MTG490016, which discharges to Unnamed Ditch To Flat Creek. EPA’s file records it issued November 9, 2017 and expiring October 31, 2019. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	MILFORD COLONY - SAND & GRAVEL PERMIT
Permittee as filed	MILFORD COLONY
NPDES ID	MTG490016
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	November 9, 2017
Expiration date	October 31, 2019
Address	Wolf Creek, MT 59648
Receiving water	UNNAMED DITCH TO FLAT CREEK
Subwatershed	Upper Flat Creek (HUC 100301020301)
SIC	1442 – Construction Sand And Gravel

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

Effluent limits and exceedances

7Pollutants on file
4Under a numeric limit
7With a violation of any kind
1With an effluent exceedance

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance
Turbidity	0	52	1	August 31, 2008
pH	2	67	0
Solids, total suspended	2	56	0
Flow rate	0	40	0
Oil and grease, hexane extr method	1	34	0
Oil and grease visual	1	33	0
Duration of discharge	0	21	0

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES MTG490016.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

Watch this permit

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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MTG490016 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

This public-records page covers NPDES permit MTG490016, held by MILFORD COLONY for its sand and gravel operation near Wolf Creek, MT, which discharges to Unnamed Ditch To Flat Creek in the Upper Flat Creek subwatershed (HUC 100301020301). The permit is a coverage under a general permit for a minor discharger, is administratively continued, and was listed as issued November 9, 2017 with an expiration date of October 31, 2019. The page reports 1 pollutant under a numeric limit and 1 pollutant with an effluent exceedance.